下寺湾油田延长组长9段致密砂岩油藏成藏条件及主控因素分析
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摘要
下寺湾油田在延长组长9段致密砂岩油藏的勘探中虽取得了新发现,但整体勘探开发进程较慢,主要是其储层致密、非均质性强,整体单井产量低。为进一步探索延长组长9段致密砂岩油藏的勘探前景,本文利用岩心、测井、测试等资料,对长9段致密砂岩油藏的成藏条件和主控因素进行了详细的分析总结。研究成果表明,长9段致密砂岩油藏的成藏主要受"优质的烃源岩"、"优越的沉积微相之下优良的储层物性"和"较高的过剩压力差"共同控制。
Although there is a new discovery about the exploration of Chang 9 Member tight sandstone oil reservoir of Yanchang Formation in Xiasiwan oilfield,aiming at the reasons of its tight reservoir,strong heterogeneity and low single well productivity,the overall exploration and development is slower. In order to further explore the exploration prospect about Chang 9 Member tight sandstone oil reservoir of Yanchang Formation,the data of the core,well logging and laboratory analysis and test are fully used to carefully analyze and summarize the hydrocarbon accumulation conditions and main controlling factors of Chang 9 Member tight sandstone oil reservoir.The research shows that the accumulation of Chang 9 Member tight sandstone oil reservoir is mainly jointly controlled by high quality source rocks,excellent reservoir properties under favorable sedimentary microfacies and higher excess pressure difference.
Although there is a new discovery about the exploration of Chang 9 Member tight sandstone oil reservoir of Yanchang Formation in Xiasiwan oilfield,aiming at the reasons of its tight reservoir,strong heterogeneity and low single well productivity,the overall exploration and development is slower. In order to further explore the exploration prospect about Chang 9 Member tight sandstone oil reservoir of Yanchang Formation,the data of the core,well logging and laboratory analysis and test are fully used to carefully analyze and summarize the hydrocarbon accumulation conditions and main controlling factors of Chang 9 Member tight sandstone oil reservoir.The research shows that the accumulation of Chang 9 Member tight sandstone oil reservoir is mainly jointly controlled by high quality source rocks,excellent reservoir properties under favorable sedimentary microfacies and higher excess pressure difference.
引文
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[20]陈瑞银,罗晓容,陈占坤,等.鄂尔多斯盆地中生代地层剥蚀量估算及其地质意义[J].地质学报,2006,80(5):685-693.
[21]李锦锋,张春灌.页岩储层微裂缝常规测井综合识别研究-以下寺湾油气田延长组长7段页岩为例[J].延安大学学报(自然科学版),2015,34(2):14-17.
[22]王传远,段毅,杜建国,等.鄂尔多斯盆地长9油层组流体包裹体特征与油气成藏期次分析[J].地质科技情报,2009,28(4):47-50.
[23]张文正,杨华,李剑锋,等.论鄂尔多斯盆地长7段优质油源岩在低渗透油气成藏富集中的主导作用-强生排烃特征及机理分析[J].石油勘探与开发,2006,33(3):289-293.
[24]田亚铭,施泽进,宋江海,等.鄂尔多斯盆地东南缘延长组砂岩储集层裂缝特征研究[J].地质力学学报,2009,15(3):281-289.
[25]张金功,袁政文.泥质岩裂缝油气藏的成藏条件及资源潜力[J].石油与天然气地质,2002,23(4):336-338.
[2]梅志超,彭荣华,杨华.陕北上三叠统延长组含油砂体的沉积环境[J].石油与天然气地质,1989,9(3):261-267.
[3]段毅,于文修,刘显阳,等.鄂尔多斯盆地长9油层组石油运聚规律研究[J].地质学报,2009,83(6):855-860.
[4]李锦锋.下寺湾油田长8段致密砂岩油藏成藏条件及有利发育区预测[J].石油地质与工程,2016,30(2):9-11,16.
[5]王津,李锦锋,刘翰林,等.鄂尔多斯盆地下寺湾油田雨岔地区延安组储层特征及有利区预测[J].西安石油大学学报(自然科学版),2017,32(2):29-34.
[6]王社教,李登华,李建忠,等.鄂尔多斯盆地页岩气勘探潜力分析[J].天然气工业,2011,31(12):40-46.
[7]李锦锋.下寺湾油气田延长组长7段页岩气藏浅析[J].复杂油气藏,2015,8(1):20-24.
[8]周文,苏瑗,王付斌,等.鄂尔多斯盆地富县区块中生界页岩气成藏条件与勘探方向[J].天然气工业,2011,31(2):29-33.
[9]张文正,杨华,杨奕华,等.鄂尔多斯盆地长7优质烃源岩的岩石学、元素地球化学特征及发育环境[J].地球化学,2008,37(1):59-64.
[10]任战利,赵重远,张军,等.鄂尔多斯盆地古地温研究[J].沉积学报,1994,12(1):56-65.
[11]任战利,张盛,高胜利,等.鄂尔多斯盆地热演化程度异常分布区及形成时期探讨[J].地质学报,2006,80(5):674-684.
[12]任战利,李文厚,梁宇,等.鄂尔多斯盆地东南部延长组致密油成藏条件及主控因素[J].石油与天然气地质,2014,35(2):190-198.
[13]吴保祥,段毅,郑朝阳,等.鄂尔多斯盆地古峰庄-王洼子地区长9油层组流体过剩压力与油气运移研究[J].地质学报,2008,82(6):844-849.
[14]李相博,刘显阳,周世新,等.鄂尔多斯盆地延长组下组合油气来源及成藏模式[J].石油勘探与开发,2012,39(2):172-180.
[15]何雁兵,傅强,金艳,等.鄂尔多斯盆地英旺地区长9、长10油层组油源及成藏分析[J].岩性油气藏,2012,24(5):55-60.
[16]赵澄林.储层沉积学[M].北京:石油工业出版社,1998.95-96.
[17]周进高,姚根顺,邓红婴,等.鄂尔多斯盆地延长组长9油层组勘探潜力分析[J].石油勘探与开发,2008,35(3):289-293.
[18]李元昊,刘池洋,王秀娟,等.鄂尔多斯盆地西北部延长组下部幕式成藏特征[J].石油学报,2009,30(1):61-67.
[19]于波,周康,郭强,等.鄂尔多斯盆地吴定地区延长组下部油气成藏模式与主控因素[J].地质与勘探,2012,48(4):858-864
[20]陈瑞银,罗晓容,陈占坤,等.鄂尔多斯盆地中生代地层剥蚀量估算及其地质意义[J].地质学报,2006,80(5):685-693.
[21]李锦锋,张春灌.页岩储层微裂缝常规测井综合识别研究-以下寺湾油气田延长组长7段页岩为例[J].延安大学学报(自然科学版),2015,34(2):14-17.
[22]王传远,段毅,杜建国,等.鄂尔多斯盆地长9油层组流体包裹体特征与油气成藏期次分析[J].地质科技情报,2009,28(4):47-50.
[23]张文正,杨华,李剑锋,等.论鄂尔多斯盆地长7段优质油源岩在低渗透油气成藏富集中的主导作用-强生排烃特征及机理分析[J].石油勘探与开发,2006,33(3):289-293.
[24]田亚铭,施泽进,宋江海,等.鄂尔多斯盆地东南缘延长组砂岩储集层裂缝特征研究[J].地质力学学报,2009,15(3):281-289.
[25]张金功,袁政文.泥质岩裂缝油气藏的成藏条件及资源潜力[J].石油与天然气地质,2002,23(4):336-338.